#Assembly64
Hrmm, I might be wrong about my quoted skeet.

It seems that Commodore have been actively trying to stop C64U owners from using Assembly64 in favor of their own CommoServe.

What’s the difference? Assembly64 allows you to download C64 everything, the latter, only stuff that permission has been given
The more I think about this, the more I'm wondering, "Is this to stop people using alternative FPGA cores"? Like if you wanted your C64U to suddenly work like a ZX Spectrum or anything else.

Perhaps they gone full corpo and a C64U acting as something else is no bueno to them?
Yeah, not cool. The C64 was all about people tinkering and experimenting and locking this down like an iPhone is the wrong move bud.

If you don't want to deal with support requests re custom firmware, wash your hands of it and say 'no, we don't support that, bye.'

www.commodore.net/post/why-we-...
April 17, 2026 at 6:51 AM
This is absolutely necessary. Assembly64 is a legal liability minefield.
April 6, 2026 at 9:33 PM
Also, for clarity CommoServe sucks hot ass, there’s fuck all on it, and it’s been going for three months now.

I don’t blame enterprising folks trying to get Assembly64 back.
April 17, 2026 at 7:04 AM
It’s about blocking Assembly64 which SPIFFY restores access to.

That’s why they’re doing this. Period.
April 17, 2026 at 7:42 AM
Got my new Ultimate-II WiFi from Gideon’s Logic plugged in, and few moments later was downloading games and demos with Assembly64. Totally impressive, and highly recommended! #c64
February 13, 2025 at 9:32 PM
And the integration with Assembly64 online database means you can loaf stuff off the Internet directly. It's brilliant. Gideon is a Genius!
December 29, 2024 at 12:22 PM
Upgraded my Ultimate64 to the new v3.11 firmware which enables Wi-Fi.

Just like that, we are able to browse the Assembly64 database, download disk images and such, right from the U64 menu. Incredible!
January 2, 2024 at 10:49 PM
The SPIFFY custo-firm/patch that came out a week ago restores the ability for people to use Assembly64 on the C64U.

And now Commodore come out and say they’re planning to block this?

Seems a bit sus.
April 17, 2026 at 6:53 AM
This goes back to Dec 2025 see here: www.lemon64.com/forum/viewto...

But yeah, essentially, a change was made on the Github to have the firmware block Assembly64 use if it identified it was running on Commodore-branded hardware.
April 17, 2026 at 6:56 AM
*breaks out of commoserve and uses Assembly64* #Commodore64
a person laying on their back on a rock with their arms outstretched
ALT: a person laying on their back on a rock with their arms outstretched
media.tenor.com
March 21, 2026 at 7:59 PM
I guarantee you some people are going to want to roll back because it fixes the Assembly64 workarounds.
April 6, 2026 at 9:28 PM
Put it in NTSC mode and watch some demos. Check out an NTSC demo group called Shade. You can find there stuff in assembly64.
June 30, 2026 at 7:17 PM
pfft i blame them, blame them with fire!!!!!

However! the assembly64 app can detect the c64u as an ultimate and control/upload directly to it, so i sent the guy a $10 donation and the problem with shortly be resolved for me
December 25, 2025 at 1:08 AM
Ok day 2, commoserve sucks, i cant find anything useful, how do we crack this thing and point it back to assembly64, I doubt they took the time to invent a new API so I'm sure we can trick it somehow? #Commodore64
December 25, 2025 at 12:44 AM
Madre mía, cómo suena esto... 😃

C64: Demo - Tribute to Vangelis [2023]
C64: Demo - Tribute to Vangelis [2023]
Somebody asked if the Assembly64 integration in the 3.11 FW for the Ultimate devices also does demos.Nice reason to record this nice Vangelis tribute from my...
www.youtube.com
January 20, 2024 at 10:04 PM
It is also in the official readme for the firmware, as well as blocking Assembly64 as part of the current firmware revision (meaning the use of Spiffy Patch as required).
downloads.commodore-international.com/documentatio...
downloads.commodore-international.com
April 15, 2026 at 9:10 AM
Assembly64 and CommoServe are firmware-level programs that allow you to download games, applications, demos and music. Assem64 can download anything, CommoServe is limited to just what Commodore have been given permission to.

CommoServe basically has nothing on it.
April 17, 2026 at 3:56 PM
I love some of the U64 functionality. Using assembly64 over network to launch games and sids, plugging my wireless pc keyboard into it and remotely controlling it. Even got a silicon cover for the keyboard and a sticker set for the C64 keys. Good stuff.
April 9, 2025 at 3:33 PM